Abstract

Lignocellulosic materials pretreated using liquid hot water (LHW) (220°C, 5 MPa, 120 s) were fermented to ethanol by batch simultaneous saccharification and fermentation (SSF) using Saccharomyces cerevisiae in the presence of Trichoderma reesei cellulase. SSF of sugarcane bagasse (as received), aspen chips (smallest dimension 3 mm), and mixed hardwood flour (-60 +70 mesh) resulted in 90% conversion to ethanol in 2-5 d at enzyme loadings of 15-30 FPU/g. In most cases, 90% of the final conversion was achieved within 75 h of inoculation. Comminution of the pretreated substrates did not affect the conversion to ethanol. The hydrolysate produced from the LHW pretreatment showed slight inhibition of batch growth of S. cerevisiae. Solids pretreated at a concentration of 100 g/L were as reactive as those pretreated at a lower concentration, provided that the temperature was maintained at 220°C.

Keywords

BagasseChemistryTrichoderma reeseiHydrolysateCellulaseEthanolFermentationHydrolysisEthanol fuelEthanol fermentationFood scienceEnzymatic hydrolysisPulp and paper industryBiochemistry

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Publication Info

Year
1996
Type
book-chapter
Pages
157-170
Citations
137
Access
Closed

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G. Peter van Walsum, Stephen G. Allen, Mark J. Spencer et al. (1996). Conversion of Lignocellulosics Pretreated with Liquid Hot Water to Ethanol. Humana Press eBooks , 157-170. https://doi.org/10.1007/978-1-4612-0223-3_14

Identifiers

DOI
10.1007/978-1-4612-0223-3_14
PMID
41376884
PMCID
PMC12686275

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Data completeness: 77%